This phone is very bad
1.ram is 512 so it increase by 1 gb
2. Cpu only 1ghz with doul core so it incease by1.7 ghz with doul core
3. Add proximity and campass sensor
4. Increase bettary by 1500 to 2000 mAh
5.3D graphics are also very poor so large apps dont install so increase 3D graphics
6. after these upgrad in hardware this set price also increase under 8000-9000 Rs.